Fig. 3

Field, energy and temperature dependence of the commensurate order q = (0, 0, 0). Field dependence of the scattering intensity taken at T = 5 K and E = 11.215 keV around: a the structurally allowed (2m, 0, 14n + 2m) peaks (e.g. (0, 0, 20)) which show a linear dependence and, b the symmetry disallowed peaks (2m, 0, 12n ± 2 + 6m) (e.g., (0, 0, 10)) which show a quadratic dependence to the applied field. A kink was again observed at μ ₀ H* = 2.8 T. The energy dependence for the allowed peaks is shown in the inset c with a dip at the absoption edge E = 11.215 keV. The main panel c shows the difference between the intensity at μ ₀ H = 0, 4 T which can be attributed to a magnetic contribution. d Energy dependence of the magnetic peak (2m, 0, 12n ± 2 + 6m) taken at μ ₀ H = 0, 4 T. e (0, 0, 10) and (0, 0, 20) peaks widths (a lower bound on the correlation length) remain constant under the applied field, suggesting there is no macroscopic phase separation. f Temperature dependence of the integrated intensities for the (0, 0, 10) at applied fields above and below H*. Above H* the onset of the FIZZ state is continuous, while below H* this onset is cut off by the incommensurate order. The Gaussian fit to the integrated RMXS intensity gives the χ ² uncertainty shown by the error bars in e, f. g Possible basis vectors describing the magnetic order of β-Li₂IrO₃, where F corresponds to ferromagnetic order, A to Néel order, C to stripy order and G to zig-zag order